
# for i in range(1, 6):
#     if i == 3:
#         break
#     print(f'吃完第{i}个包子')

theSum = 0
count = 0
while True:
    num = input('请输入一个数字：(分号表示输入结束)')
    if num == ';':
        break
    num = float(num)
    theSum += num
    count +=1

print(f'平均值为{theSum/count}')
